There's something wrong going on here. I first reported this issue as a 'linux' bug, based on a hasty reading of documentation. I never finished that report, so I expect that to be incomplete.
Shortly afterwards I re-reported it as a probable NetworkManager issue. It seems that these two issues have got the same #number. Any confusion about whether this is confirmed or not is, I'm afraid of your own making. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/1796355 Title: USB-C ValueLine network adapter fails to connect Status in linux package in Ubuntu: Incomplete Status in network-manager package in Ubuntu: New Bug description: The adapter I'm trying to use using is a 'Valueline' USB-C adapter, with no external identifying information. lsusb lists it as Bus 004 Device 022: ID 0bda:8153 Realtek Semiconductor Corp. It works fine on a Windows 10 system (same hardware platform), where it's identified as a 10/100/1000 Realtek adapter. When I connect it to my system (Asus Zenbook UX490UA) internal lights go on, but no connection is produced. The network icon (upper right) is shown briefly, then disappears, the is show, then disappears. After some time it seems to give up. Kernel logs show repeated occurrences of: Oct 5 17:02:22 athasus kernel: [ 317.843590] usb 4-2: new SuperSpeed USB device number 121 using xhci_hcd Oct 5 17:02:22 athasus kernel: [ 317.863719] usb 4-2: New USB device found, idVendor=0bda, idProduct=8153 Oct 5 17:02:22 athasus kernel: [ 317.863728] usb 4-2: New USB device strings: Mfr=1, Product=2, SerialNumber=6 Oct 5 17:02:22 athasus kernel: [ 317.863735] usb 4-2: Product: USB 10/100/1000 LAN Oct 5 17:02:22 athasus kernel: [ 317.863741] usb 4-2: Manufacturer: Realtek Oct 5 17:02:22 athasus kernel: [ 317.863745] usb 4-2: SerialNumber: 000001000000 Oct 5 17:02:22 athasus kernel: [ 318.000268] usb 4-2: reset SuperSpeed USB device number 121 using xhci_hcd Oct 5 17:02:22 athasus kernel: [ 318.057875] r8152 4-2:1.0 eth0: v1.09.9 Oct 5 17:02:22 athasus kernel: [ 318.138042] r8152 4-2:1.0 enxa0cec809bf58: renamed from eth0 Oct 5 17:02:22 athasus kernel: [ 318.170397] IPv6: ADDRCONF(NETDEV_UP): enxa0cec809bf58: link is not ready Oct 5 17:02:22 athasus kernel: [ 318.176359] IPv6: ADDRCONF(NETDEV_UP): enxa0cec809bf58: link is not ready Oct 5 17:02:22 athasus kernel: [ 318.354745] r8152 4-2:1.0 enxa0cec809bf58: Stop submitting intr, status -71 Oct 5 17:02:22 athasus kernel: [ 318.543737] usb 4-2: USB disconnect, device number 121 ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: network-manager 1.10.6-2ubuntu1 ProcVersionSignature: Ubuntu 4.15.0-36.39-generic 4.15.18 Uname: Linux 4.15.0-36-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.4 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Fri Oct 5 17:35:17 2018 IfupdownConfig: # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback InstallationDate: Installed on 2018-10-03 (1 days ago) InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725) IpRoute: default via 172.16.4.1 dev wlp2s0 proto dhcp metric 600 169.254.0.0/16 dev wlp2s0 scope link metric 1000 172.16.4.0/24 dev wlp2s0 proto kernel scope link src 172.16.4.102 metric 600 NetworkManager.state: [main] NetworkingEnabled=true WirelessEnabled=true WWANEnabled=true SourcePackage: network-manager UpgradeStatus: No upgrade log present (probably fresh install) nmcli-con: NAME UUID TYPE TIMESTAMP TIMESTAMP-REAL AUTOCONNECT AUTOCONNECT-PRIORITY READONLY DBUS-PATH ACTIVE DEVICE STATE ACTIVE-PATH SLAVE ATH 79577e92-4b01-46c4-bbff-2088aaf0750a wifi 1538753528 fre 5 okt 2018 17:32:08 yes 0 no /org/freedesktop/NetworkManager/Settings/1 yes wlp2s0 activated /org/freedesktop/NetworkManager/ActiveConnection/1 -- nmcli-dev: DEVICE TYPE STATE DBUS-PATH CONNECTION CON-UUID CON-PATH wlp2s0 wifi connected /org/freedesktop/NetworkManager/Devices/2 ATH 79577e92-4b01-46c4-bbff-2088aaf0750a /org/freedesktop/NetworkManager/ActiveConnection/1 lo loopback unmanaged /org/freedesktop/NetworkManager/Devices/1 -- -- -- nmcli-nm: RUNNING VERSION STATE STARTUP CONNECTIVITY NETWORKING WIFI-HW WIFI WWAN-HW WWAN running 1.10.6 connected started full enabled enabled enabled enabled enabled To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1796355/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp